--- a/debian/rules	2020-11-18 10:19:20.167692717 +0000
--- b/debian/rules	2020-11-18 10:32:11.876837466 +0000
@@ -6,6 +6,9 @@
 DPKG_EXPORT_BUILDFLAGS = 1
 include /usr/share/dpkg/buildflags.mk
 
+include /usr/share/dpkg/pkg-info.mk
+export KBUILD_BUILD_TIMESTAMP = @$(SOURCE_DATE_EPOCH)
+
 %:
 	dh $@